/*
 *  Copyright (C) 2010-2025 JPEXS, All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.
 */
package com.jpexs.decompiler.graph.model;

import com.jpexs.decompiler.flash.SourceGeneratorLocalData;
import com.jpexs.decompiler.flash.action.model.operations.Inverted;
import com.jpexs.decompiler.flash.ecma.EcmaScript;
import com.jpexs.decompiler.flash.helpers.GraphTextWriter;
import com.jpexs.decompiler.graph.CompilationException;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphTargetDialect;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.SimpleValue;
import com.jpexs.decompiler.graph.SourceGenerator;
import com.jpexs.decompiler.graph.TypeItem;
import java.util.List;
import java.util.Set;

/**
 * Logical NOT.
 *
 * @author JPEXS
 */
public class NotItem extends UnaryOpItem implements LogicalOpItem, Inverted {

    /**
     * Constructor.
     * 
     * @param dialect Dialect
     * @param instruction Instruction
     * @param lineStartIns Line start instruction
     * @param value Value
     */
    public NotItem(GraphTargetDialect dialect, GraphSourceItem instruction, GraphSourceItem lineStartIns, GraphTargetItem value) {
        super(dialect, instruction, lineStartIns, PRECEDENCE_UNARY, value, "!", "Boolean");
    }

    @Override
    public Object getResult() {
        return !value.getResultAsBoolean();
    }

    public static Boolean getResult(Object obj) {
        boolean ret = EcmaScript.toBoolean(obj);
        if (ret) {
            return Boolean.FALSE;
        } else {
            return Boolean.TRUE;
        }
    }

    @Override
    public boolean isCompileTime(Set<GraphTargetItem> dependencies) {
        if (dependencies.contains(value)) {
            return false;
        }
        if (!((value instanceof SimpleValue) && ((SimpleValue) value).isSimpleValue())) {
            dependencies.add(value);
        }
        return value.isCompileTime(dependencies);
    }

    /**
     * Gets the original value.
     * @return Original value
     */
    public GraphTargetItem getOriginal() {
        return value;
    }

    @Override
    public List<GraphSourceItem> toSource(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
        return generator.generate(localData, this);
    }

    @Override
    public boolean hasReturnValue() {
        return true;
    }

    @Override
    public GraphTargetItem returnType() {
        return TypeItem.BOOLEAN;
    }

    @Override
    public GraphTextWriter toString(GraphTextWriter writer, LocalData localData, String implicitCoerce, boolean noParenthesis) throws InterruptedException {
        if ("Boolean".equals(implicitCoerce)) {
            //Skip explicit conversion to boolean, it is not needed, it is done implicitly
            if (value instanceof NotItem) {
                return value.value.toStringBoolean(writer, localData);
            }
        }
        
        return super.toString(writer, localData, implicitCoerce, noParenthesis);
    }
    
    

    @Override
    public GraphTargetItem invert(GraphSourceItem src) {
        //if this is already !!val, convert to !val
        if (value instanceof NotItem) {
            return value;
        }
        //If it is not a boolean, put !! there for toBoolean conversion
        if (!TypeItem.BOOLEAN.equals(value.returnType()) && !(value instanceof DuplicateItem)) {
            return new NotItem(dialect, null, null, this);
        }

        //can be inverted
        return value;
    }
}
